Abstract
As a result of the research, the possibility of directional control of the operational properties of epoxy composites by the use of small additives of thermally expanded graphite-graphene structures has been proved. The rational content of the structuring additive in the composition of the epoxy composite (0.05 parts by mass.) was selected, which ensured an increase in the studied complex of physico-mechanical properties. The influence of thermally expanded graphite on the process of structure formation of an epoxy composite has been established. The addition of thermally expanded graphite increases thermal, fire and heat resistance as well as the coefficient of heat-conducting epoxy composite.
Highlights
Polymer composite materials which combine unique properties, high deformation and strength characteristics, and at the same time low specific weight are widely applied in industry[1,2,3]
The compositions were developed on the basis of epoxy resin ED-20 (GOST 10587-93) because it has low viscosity, a narrow limit of the epoxy groups content, the stability of physico-chemical properties
For the plasticization of epoxy composites, oligo(resorcinophenyl phosphate) with terminal phenyl groups (ORPP) purity: 99% manufactured by ICL Industrial Products America Inc. (USA), was used in the work
Summary
Polymer composite materials which combine unique properties, high deformation and strength characteristics, and at the same time low specific weight are widely applied in industry[1,2,3]. The use of plasticizers and fillers provides necessary performance characteristics of composite materials. To provide polymer composite materials and their products with better operational characteristics, various modifying additives and fillers are used[1,2,3,4,5]. Due to the high specific surface, thermal stability and excellent mechanical characteristics, carbon materials (graphite and graphene oxides, nanotubes, nanofibres) are promising for widespread use in lightweight polymer composites, providing them with enhanced performance characteristics[14,15,16,17,18,19,20,21]. During thermal decomposition of the composite, the presence of phosphorus provides an increase in the yield of carbonized structures, which are the physical barrier for the inter-diffusion of the oxidant and combustible gases to the combustion zone, which, in general, reduces the flammability of epoxy composite
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